osmo-bts-litecell15: Fix missing frame number in MEAS IND
osmo-bts-litecell15: Fix missing frame number in MEAS IND

The layer 1 interface (l1_if.c) for osmo-bts-litecell15 does not include
the frame number into the measurement indications it forwards
to higher layers. The frame number is required to properly
detect the end of a measurement period.

change process_meas_res() to properly include the frame number into the
l1sap primitive (struct osmo_phsap_prim *l1sap)

Change-Id: Iee9c8f88b05cd5dba9920bb08e079a643e713237

osmocom/osmo-bts,osmocom/osmo-bts,osmocom/osmo-bts